{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7904",
    "entityType": "User",
    "nonce": "0x00d919d37b4a7efe5c258c02805aeb0983173dbf0ab441d9d890399f80d524ae",
    "signature": "0xf60c23c03ceada65dea91801f609e42544f38bcc720303adb0c4dbdcb3e09f466b3cb312b1a43e9357c237f0f0aa096d193a255ae2a1f80795b25dfab1d8ef5f1b",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}